Potassium cyanide (KCN) was an important supply of alkali steel cyanides before the creation in the Castner approach. It was produced by the decomposition of potassium ferrocyanide. The response is as follows: KCN is used for a photographic fixer within the wet plate collodion process.The KCN dissolves silver where it https://collindczur.bloguerosa.com/29688678/potassium-cyanide-cas-number-fundamentals-explained